I am currently running Unity3D 2018.3.0f2 with Visual Studio 2017 as my IDE. I just discovered that my Unity extension for Resharper 2018.3, is no longer available. Searching through the extension manager no longer displays the Unity extension to be available.

Has Unity support for Resharper, within Visual Studio 2017 been discontinued?

Is the Unity extension out of date? (Which might explain why it suddenly stopped working).